Answer:
15
Step-by-step explanation:
3a + 5a + 4a = 12a = 180
a = 180/12 = 15
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Verified answer
3a+4a+5a=18012a=180
a=180/12
a=15
Answer:
15
Step-by-step explanation:
3a + 5a + 4a = 12a = 180
a = 180/12 = 15